multiBlockGenerator2D.hh

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/* This file is part of the Palabos library.
 *
 * Copyright (C) 2011 FlowKit Sarl
 * Avenue de Chailly 23
 * 1012 Lausanne, Switzerland
 * E-mail contact: contact@flowkit.com
 *
 * The most recent release of Palabos can be downloaded at 
 * <http://www.palabos.org/>
 *
 * The library Palabos is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * The library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef MULTI_BLOCK_GENERATOR_2D_HH
#define MULTI_BLOCK_GENERATOR_2D_HH

#include "core/globalDefs.h"
#include "multiBlock/sparseBlockStructure2D.h"
#include "multiBlock/localMultiBlockInfo2D.h"
#include "multiBlock/nonLocalTransfer2D.h"
#include "multiBlock/defaultMultiBlockPolicy2D.h"
#include "multiBlock/multiBlockOperations2D.h"
#include "dataProcessors/dataAnalysisWrapper2D.h"
#include "dataProcessors/ntensorAnalysisWrapper2D.h"

namespace plb {

inline void transferDataProcessors(MultiBlock2D const& from, MultiBlock2D& to)
{
    std::vector<MultiBlock2D::ProcessorStorage2D>
        newProcessors(from.getStoredProcessors());
    // Redirect all references-to-self to the new self.
    id_t oldId = from.getId();
    id_t newId = to.getId();
    for (pluint iProcessor=0; iProcessor<newProcessors.size(); ++iProcessor) {
        newProcessors[iProcessor].replace(oldId, newId);
        DataProcessorGenerator2D* newGenerator = newProcessors[iProcessor].getGenerator().clone();
        if (newGenerator->extract(to.getBoundingBox())) {
            addInternalProcessor( *newGenerator,
                                  newProcessors[iProcessor].getMultiBlocks(),
                                  newProcessors[iProcessor].getLevel() );
        }
        delete newGenerator;
    }
}

/* *************** 1. MultiScalarField ************************************** */

template<typename T>
void transferScalarFieldLocal (
        MultiScalarField2D<T>& from, MultiScalarField2D<T>& to, Box2D const& domain )
{
    // 1. Copy all data from the old to the new field.
    plb::copy(from, to, from.getBoundingBox());
    // 2. Reconstruct the data processors.
    transferDataProcessors(from, to);
}

template<typename T>
void transferScalarFieldNonLocal (
        MultiScalarField2D<T> const& from, MultiScalarField2D<T>& to, Box2D const& domain )
{
    // 1. Copy all data from the old to the new field. This includes dynamics
    //    objects which must be fully serialized and regenerated.
    copyNonLocal(from, to, domain);
    // 2. Reconstruct the data processors.
    transferDataProcessors(from, to);
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > generateMultiScalarField (
        Box2D boundingBox, plint envelopeWidth )
{
    return std::auto_ptr<MultiScalarField2D<T> > (
        new MultiScalarField2D<T> (
            defaultMultiBlockPolicy2D().getMultiBlockManagement(boundingBox, envelopeWidth),
            defaultMultiBlockPolicy2D().getBlockCommunicator(),
            defaultMultiBlockPolicy2D().getCombinedStatistics(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>() )
    );
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > generateMultiScalarField (
        Box2D boundingBox, T iniVal, plint envelopeWidth )
{
    return std::auto_ptr<MultiScalarField2D<T> > (
        new MultiScalarField2D<T> (
            defaultMultiBlockPolicy2D().getMultiBlockManagement(boundingBox, envelopeWidth),
            defaultMultiBlockPolicy2D().getBlockCommunicator(),
            defaultMultiBlockPolicy2D().getCombinedStatistics(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>(), iniVal )
    );
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > defaultGenerateMultiScalarField2D (
        MultiBlockManagement2D const& management, plint nDim )
{
    return std::auto_ptr<MultiScalarField2D<T> > (
        new MultiScalarField2D<T> (
            management,
            defaultMultiBlockPolicy2D().getBlockCommunicator(),
            defaultMultiBlockPolicy2D().getCombinedStatistics(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>(), T() )
    );
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > clone (
        MultiScalarField2D<T>& originalField,
        Box2D const& subDomain, bool crop )
{
    std::auto_ptr<MultiScalarField2D<T> > clonedField (
            generateMultiScalarField<T>(originalField, subDomain, crop) );

    transferScalarFieldLocal( originalField, *clonedField,
                              originalField.getBoundingBox() );

    return clonedField;
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > generateMultiScalarField (
        MultiBlock2D const& originalField, Box2D const& intersection,
        bool crop )
{
    return std::auto_ptr<MultiScalarField2D<T> > (
        new MultiScalarField2D<T> (
            intersect(originalField.getMultiBlockManagement(), intersection, crop),
            originalField.getBlockCommunicator().clone(),
            originalField.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>() )
    );
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > generateIntersectMultiScalarField (
        MultiBlock2D const& originalField1,
        MultiBlock2D const& originalField2, bool crop )
{
    return std::auto_ptr<MultiScalarField2D<T> > (
        new MultiScalarField2D<T> (
            intersect(originalField1.getMultiBlockManagement(),
                      originalField2.getMultiBlockManagement(), crop),
            originalField1.getBlockCommunicator().clone(),
            originalField1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>() )
    );
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > generateIntersectMultiScalarField (
        MultiBlock2D const& originalField1,
        MultiBlock2D const& originalField2,
        Box2D const& intersection, bool crop )
{
    MultiBlockManagement2D intersectedBlocks (
            intersect ( originalField1.getMultiBlockManagement(),
                        originalField2.getMultiBlockManagement(), crop ) );
    MultiBlockManagement2D intersectWithDomain (
            intersect( intersectedBlocks, intersection, crop ) );
    return std::auto_ptr<MultiScalarField2D<T> > (
        new MultiScalarField2D<T> (
            intersectWithDomain,
            originalField1.getBlockCommunicator().clone(),
            originalField1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>() )
    );
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > generateJoinMultiScalarField (
        MultiBlock2D const& originalField1,
        MultiBlock2D const& originalField2 )
{
    return std::auto_ptr<MultiScalarField2D<T> > (
        new MultiScalarField2D<T> (
            block_union (
                originalField1.getMultiBlockManagement(),
                originalField2.getMultiBlockManagement() ),
            originalField1.getBlockCommunicator().clone(),
            originalField1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>() )
    );
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > extend (
        MultiScalarField2D<T>& originalBlock, Box2D const& addedBlock )
{
    std::auto_ptr<MultiScalarField2D<T> > newBlock (
        new MultiScalarField2D<T> (
            extend( originalBlock.getMultiBlockManagement(), addedBlock, addedBlock ),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>() )
    );

    transferScalarFieldLocal( originalBlock, *newBlock,
                              originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > except (
        MultiScalarField2D<T>& originalBlock,
        Box2D const& exceptedBlock )
{
    std::auto_ptr<MultiScalarField2D<T> > newBlock (
        new MultiScalarField2D<T> (
            except( originalBlock.getMultiBlockManagement(), exceptedBlock),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>() )
    );

    transferScalarFieldLocal( originalBlock, *newBlock,
                              originalBlock.getBoundingBox() );

    return newBlock;
}


template<typename T>
std::auto_ptr<MultiScalarField2D<T> > redistribute (
        MultiScalarField2D<T> const& originalField,
        SparseBlockStructure2D const& newBlockStructure )
{
    std::auto_ptr<MultiScalarField2D<T> > newField (
        new MultiScalarField2D<T> (
            MultiBlockManagement2D (
                newBlockStructure,
                originalField.getMultiBlockManagement().getThreadAttribution().clone(),
                originalField.getMultiBlockManagement().getEnvelopeWidth() ),
            originalField.getBlockCommunicator().clone(),
            originalField.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>() )
    );

    transferScalarFieldNonLocal(originalField, *newField, originalField.getBoundingBox());

    return newField;
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > redistribute (
        MultiScalarField2D<T> const& originalField,
        SparseBlockStructure2D const& newBlockStructure,
        Box2D const& intersection, bool crop )
{
    return redistribute(originalField, intersect(newBlockStructure, intersection, crop));
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > align (
        MultiScalarField2D<T> const& originalBlock,
        MultiBlock2D const& partnerBlock )
{
    std::auto_ptr<MultiScalarField2D<T> > newBlock (
        new MultiScalarField2D<T> (
            align(originalBlock.getMultiBlockManagement(),
                  partnerBlock.getMultiBlockManagement()),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>() )
    );

    transferScalarFieldNonLocal( originalBlock, *newBlock,
                                 originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > reparallelize (
        MultiScalarField2D<T> const& originalBlock )
{
    return reparallelize(originalBlock, 64, 64);
}

template<typename T>
std::auto_ptr<MultiScalarField2D<T> > reparallelize (
        MultiScalarField2D<T> const& originalBlock,
        plint blockLx, plint blockLy )
{
    std::auto_ptr<MultiScalarField2D<T> > newBlock (
        new MultiScalarField2D<T> (
            reparallelize (
                originalBlock.getMultiBlockManagement(), blockLx, blockLy ),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiScalarAccess<T>() )
    );

    transferScalarFieldNonLocal( originalBlock, *newBlock,
                                 originalBlock.getBoundingBox() );

    return newBlock;
}


/* *************** 2. MultiNTensorField ************************************** */

template<typename T>
std::auto_ptr<MultiNTensorField2D<T> > defaultGenerateMultiNTensorField2D (
        MultiBlockManagement2D const& management, plint nDim )
{
    MultiNTensorField2D<T>* field = new MultiNTensorField2D<T> (
        nDim, management,
        defaultMultiBlockPolicy2D().getBlockCommunicator(),
        defaultMultiBlockPolicy2D().getCombinedStatistics(),
        defaultMultiBlockPolicy2D().getMultiNTensorAccess<T>() );
    field->periodicity().toggleAll(true);
    return std::auto_ptr<MultiNTensorField2D<T> >(field);
}

template<typename T>
MultiNTensorField2D<T>* generateMultiNTensorField2D(Box2D const& domain, plint ndim)
{
    plint defaultEnvelopeWidth = 1;
    MultiNTensorField2D<T>* field = new MultiNTensorField2D<T> (
        ndim,
        defaultMultiBlockPolicy2D().getMultiBlockManagement(domain,defaultEnvelopeWidth),
        defaultMultiBlockPolicy2D().getBlockCommunicator(),
        defaultMultiBlockPolicy2D().getCombinedStatistics(),
        defaultMultiBlockPolicy2D().getMultiNTensorAccess<T>() );
    field->periodicity().toggleAll(true);
    return field;
}


template<typename T>
void transferNTensorFieldLocal (
        MultiNTensorField2D<T>& from, MultiNTensorField2D<T>& to, Box2D const& domain )
{
    // 1. Copy all data from the old to the new field.
    plb::copy(from, to, from.getBoundingBox());
    // 2. Reconstruct the data processors.
    transferDataProcessors(from, to);
}

template<typename T>
void transferNTensorFieldNonLocal (
        MultiNTensorField2D<T> const& from, MultiNTensorField2D<T>& to, Box2D const& domain )
{
    // 1. Copy all data from the old to the new field. This includes dynamics
    //    objects which must be fully serialized and regenerated.
    copyNonLocal(from, to, domain);
    // 2. Reconstruct the data processors.
    transferDataProcessors(from, to);
}

template<typename T>
MultiNTensorField2D<T>* clone (
        MultiNTensorField2D<T>& originalField,
        Box2D const& subDomain, bool crop )
{
    MultiNTensorField2D<T>* clonedField =
            generateMultiNTensorField<T>(originalField, subDomain, crop);
    clonedField->periodicity()=originalField.periodicity();

    transferNTensorFieldLocal( originalField, *clonedField,
                               originalField.getBoundingBox() );

    return clonedField;
}

template<typename T>
MultiNTensorField2D<T>* generateMultiNTensorField (
        MultiBlock2D const& originalField, Box2D const& intersection,
        plint nDim, bool crop )
{
    MultiNTensorField2D<T>* newField = new MultiNTensorField2D<T> (
            nDim,
            intersect(originalField.getMultiBlockManagement(), intersection, crop),
            originalField.getBlockCommunicator().clone(),
            originalField.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiNTensorAccess<T>() );
    newField->periodicity() = originalField.periodicity();
    return newField;
}

template<typename T1, typename T2>
MultiNTensorField2D<T2>*
    generateNTensorFieldFromNTensor2D (
            MultiNTensorField2D<T1> const& field,
            Box2D const& intersection, plint nDim )
{
    MultiNTensorField2D<T2>* newField = generateMultiNTensorField<T2>(field, intersection, nDim);
    newField->periodicity() = field.periodicity();
    return newField;
}

template<typename T1, typename T2, template<typename U> class Descriptor>
MultiNTensorField2D<T1>*
    generateNTensorFieldFromBlockLattice2D (
            MultiBlockLattice2D<T2,Descriptor> const& lattice,
            Box2D const& intersection, plint nDim )
{
    MultiNTensorField2D<T1>* newField = generateMultiNTensorField<T1>(lattice, intersection, nDim);
    newField->periodicity() = lattice.periodicity();
    return newField;
}


template<typename T>
MultiNTensorField2D<T>* generateIntersectMultiNTensorField (
        MultiBlock2D const& originalField1,
        MultiBlock2D const& originalField2, plint nDim, bool crop )
{
    MultiNTensorField2D<T>* newField = new MultiNTensorField2D<T> (
            nDim,
            intersect(originalField1.getMultiBlockManagement(),
                      originalField2.getMultiBlockManagement(), crop),
            originalField1.getBlockCommunicator().clone(),
            originalField1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiNTensorAccess<T>() );
    newField->periodicity() = originalField1.periodicity();
    return newField;
}

template<typename T>
MultiNTensorField2D<T>* generateIntersectMultiNTensorField (
        MultiBlock2D const& originalField1,
        MultiBlock2D const& originalField2,
        Box2D const& intersection, plint nDim, bool crop )
{
    MultiBlockManagement2D intersectedBlocks (
            intersect ( originalField1.getMultiBlockManagement(),
                        originalField2.getMultiBlockManagement(), crop ) );
    MultiBlockManagement2D intersectWithDomain (
            intersect( intersectedBlocks, intersection, crop ) );
    MultiNTensorField2D<T>* newField = new MultiNTensorField2D<T> (
            nDim,
            intersectWithDomain,
            originalField1.getBlockCommunicator().clone(),
            originalField1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiNTensorAccess<T>() );
    newField->periodicity() = originalField1.periodicity();
    return newField;
}

template<typename T>
MultiNTensorField2D<T>* generateJoinMultiNTensorField (
        MultiBlock2D const& originalField1,
        MultiBlock2D const& originalField2, plint nDim )
{
    MultiNTensorField2D<T>* newField = new MultiNTensorField2D<T> (
            nDim,
            block_union (
                originalField1.getMultiBlockManagement(),
                originalField2.getMultiBlockManagement() ),
            originalField1.getBlockCommunicator().clone(),
            originalField1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiNTensorAccess<T>() );
    newField->periodicity() = originalField1.periodicity();
    return newField;
}

template<typename T>
MultiNTensorField2D<T>* extend (
        MultiNTensorField2D<T>& originalBlock, Box2D const& addedBlock )
{
    MultiNTensorField2D<T>* newBlock =
        new MultiNTensorField2D<T> (
            originalBlock.getNdim(),
            extend( originalBlock.getMultiBlockManagement(), addedBlock, addedBlock ),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiNTensorAccess<T>() );
    newBlock->periodicity() = originalBlock.periodicity();

    transferNTensorFieldLocal( originalBlock, *newBlock,
                               originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T>
MultiNTensorField2D<T>* except (
        MultiNTensorField2D<T>& originalBlock,
        Box2D const& exceptedBlock )
{
    MultiNTensorField2D<T>* newBlock =
        new MultiNTensorField2D<T> (
            originalBlock.getNdim(),
            except( originalBlock.getMultiBlockManagement(), exceptedBlock),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiNTensorAccess<T>() );
    newBlock->periodicity() = originalBlock.periodicity();

    transferNTensorFieldLocal( originalBlock, *newBlock,
                               originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T>
MultiNTensorField2D<T>* align (
        MultiNTensorField2D<T> const& originalBlock,
        MultiBlock2D const& partnerBlock )
{
    MultiNTensorField2D<T>* newBlock =
        new MultiNTensorField2D<T> (
            originalBlock.getNdim(),
            align(originalBlock.getMultiBlockManagement(),
                  partnerBlock.getMultiBlockManagement()),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiNTensorAccess<T>() );
    newBlock->periodicity() = originalBlock.periodicity();

    transferNTensorFieldNonLocal( originalBlock, *newBlock,
                                  originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T>
MultiNTensorField2D<T>* reparallelize (
        MultiNTensorField2D<T> const& originalBlock )
{
    MultiNTensorField2D<T>* newBlock =
        new MultiNTensorField2D<T> (
            originalBlock.getNdim(),
            reparallelize(originalBlock.getMultiBlockManagement(), 64,64),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiNTensorAccess<T>() );
    newBlock->periodicity() = originalBlock.periodicity();

    transferNTensorFieldNonLocal( originalBlock, *newBlock,
                                  originalBlock.getBoundingBox() );

    return newBlock;
}

/* *************** 3. MultiTensorField ************************************** */

template<typename T, int nDim>
void transferTensorFieldLocal (
        MultiTensorField2D<T,nDim>& from, MultiTensorField2D<T,nDim>& to, Box2D const& domain )
{
    // 1. Copy all data from the old to the new field.
    plb::copy(from, to, from.getBoundingBox());
    // 2. Reconstruct the data processors.
    transferDataProcessors(from, to);
}

template<typename T, int nDim>
void transferTensorFieldNonLocal (
        MultiTensorField2D<T,nDim> const& from, MultiTensorField2D<T,nDim>& to, Box2D const& domain )
{
    // 1. Copy all data from the old to the new field. This includes dynamics
    //    objects which must be fully serialized and regenerated.
    copyNonLocal(from, to, domain);
    // 2. Reconstruct the data processors.
    transferDataProcessors(from, to);
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > generateMultiTensorField (
        Box2D boundingBox, plint envelopeWidth )
{
    return std::auto_ptr<MultiTensorField2D<T,nDim> > (
        new MultiTensorField2D<T,nDim> (
            defaultMultiBlockPolicy2D().getMultiBlockManagement(boundingBox, envelopeWidth),
            defaultMultiBlockPolicy2D().getBlockCommunicator(),
            defaultMultiBlockPolicy2D().getCombinedStatistics(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>() )
    );
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > generateMultiTensorField (
        Box2D boundingBox, Array<T,nDim> const& iniVal, plint envelopeWidth )
{
    return std::auto_ptr<MultiTensorField2D<T,nDim> > (
        new MultiTensorField2D<T,nDim> (
            defaultMultiBlockPolicy2D().getMultiBlockManagement(boundingBox, envelopeWidth),
            defaultMultiBlockPolicy2D().getBlockCommunicator(),
            defaultMultiBlockPolicy2D().getCombinedStatistics(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>(), iniVal )
    );
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > defaultGenerateMultiTensorField2D (
        MultiBlockManagement2D const& management, plint nDimParam )
{
    Array<T,nDim> iniVal;
    iniVal.resetToZero();
    return std::auto_ptr<MultiTensorField2D<T,nDim> > (
        new MultiTensorField2D<T,nDim> (
            management,
            defaultMultiBlockPolicy2D().getBlockCommunicator(),
            defaultMultiBlockPolicy2D().getCombinedStatistics(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>(), iniVal )
    );
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > clone (
        MultiTensorField2D<T,nDim>& originalField,
        Box2D const& subDomain, bool crop )
{
    std::auto_ptr<MultiTensorField2D<T,nDim> > clonedField (
            generateMultiTensorField<T,nDim>(originalField, subDomain, crop) );

    transferTensorFieldLocal( originalField, *clonedField,
                              originalField.getBoundingBox() );

    return clonedField;
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > generateMultiTensorField (
        MultiBlock2D const& originalField, Box2D const& intersection,
        bool crop )
{
    return std::auto_ptr<MultiTensorField2D<T,nDim> > (
        new MultiTensorField2D<T,nDim> (
            intersect(originalField.getMultiBlockManagement(), intersection, crop),
            originalField.getBlockCommunicator().clone(),
            originalField.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>() )
    );
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > generateIntersectMultiTensorField (
        MultiBlock2D const& originalField1,
        MultiBlock2D const& originalField2, bool crop )
{
    return std::auto_ptr<MultiTensorField2D<T,nDim> > (
        new MultiTensorField2D<T,nDim> (
            intersect(originalField1.getMultiBlockManagement(),
                      originalField2.getMultiBlockManagement(), crop),
            originalField1.getBlockCommunicator().clone(),
            originalField1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>() )
    );
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > generateIntersectMultiTensorField (
        MultiBlock2D const& originalField1,
        MultiBlock2D const& originalField2,
        Box2D const& intersection, bool crop )
{
    MultiBlockManagement2D intersectedBlocks (
            intersect ( originalField1.getMultiBlockManagement(),
                        originalField2.getMultiBlockManagement(), crop ) );
    MultiBlockManagement2D intersectWithDomain (
            intersect( intersectedBlocks, intersection, crop ) );
    return std::auto_ptr<MultiTensorField2D<T,nDim> > (
        new MultiTensorField2D<T,nDim> (
            intersectWithDomain,
            originalField1.getBlockCommunicator().clone(),
            originalField1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>() )
    );
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > generateJoinMultiTensorField (
        MultiBlock2D const& originalField1,
        MultiBlock2D const& originalField2 )
{
    return std::auto_ptr<MultiTensorField2D<T,nDim> > (
        new MultiTensorField2D<T,nDim> (
            block_union (
                originalField1.getMultiBlockManagement(),
                originalField2.getMultiBlockManagement() ),
            originalField1.getBlockCommunicator().clone(),
            originalField1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>() )
    );
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > extend (
        MultiTensorField2D<T,nDim>& originalBlock, Box2D const& addedBlock )
{
    std::auto_ptr<MultiTensorField2D<T,nDim> > newBlock (
        new MultiTensorField2D<T,nDim> (
            extend( originalBlock.getMultiBlockManagement(), addedBlock, addedBlock ),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>() )
    );

    transferTensorFieldLocal( originalBlock, *newBlock,
                              originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > except (
        MultiTensorField2D<T,nDim>& originalBlock,
        Box2D const& exceptedBlock )
{
    std::auto_ptr<MultiTensorField2D<T,nDim> > newBlock (
        new MultiTensorField2D<T,nDim> (
            except( originalBlock.getMultiBlockManagement(), exceptedBlock),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>() )
    );

    transferTensorFieldLocal( originalBlock, *newBlock,
                              originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > redistribute (
        MultiTensorField2D<T,nDim> const& originalField,
        SparseBlockStructure2D const& newBlockStructure )
{
    std::auto_ptr<MultiTensorField2D<T,nDim> > newField (
        new MultiTensorField2D<T,nDim> (
            MultiBlockManagement2D (
                newBlockStructure,
                originalField.getMultiBlockManagement().getThreadAttribution().clone(),
                originalField.getMultiBlockManagement().getEnvelopeWidth() ),
            originalField.getBlockCommunicator().clone(),
            originalField.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>() )
    );
    transferTensorFieldNonLocal(originalField, *newField, originalField.getBoundingBox());

    return newField;
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > redistribute (
        MultiTensorField2D<T,nDim> const& originalField,
        SparseBlockStructure2D const& newBlockStructure,
        Box2D const& intersection, bool crop  )
{
    return redistribute(originalField, intersect(newBlockStructure, intersection, crop));
}


template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > align (
        MultiTensorField2D<T,nDim> const& originalBlock,
        MultiBlock2D const& partnerBlock )
{
    std::auto_ptr<MultiTensorField2D<T,nDim> > newBlock (
        new MultiTensorField2D<T,nDim> (
            align(originalBlock.getMultiBlockManagement(),
                  partnerBlock.getMultiBlockManagement()),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>() )
    );

    transferTensorFieldNonLocal( originalBlock, *newBlock,
                                 originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > reparallelize (
        MultiTensorField2D<T,nDim> const& originalBlock )
{
    return reparallelize(originalBlock, 64, 64);
}

template<typename T, int nDim>
std::auto_ptr<MultiTensorField2D<T,nDim> > reparallelize (
        MultiTensorField2D<T,nDim> const& originalBlock,
        plint blockLx, plint blockLy )
{
    std::auto_ptr<MultiTensorField2D<T,nDim> > newBlock (
        new MultiTensorField2D<T,nDim> (
            reparallelize (
                originalBlock.getMultiBlockManagement(), blockLx, blockLy ),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiTensorAccess<T,nDim>() )
    );

    transferTensorFieldNonLocal( originalBlock, *newBlock,
                                 originalBlock.getBoundingBox() );

    return newBlock;
}


/* *************** 4. MultiBlockLattice ************************************** */

template<typename T, template<typename U> class Descriptor>
void transferBlockLatticeLocal (
        MultiBlockLattice2D<T,Descriptor>& from,
        MultiBlockLattice2D<T,Descriptor>& to, Box2D const& domain )
{
    // 1. Copy static and dynamic data to the new block.
    copyRegenerate(from, to, from.getBoundingBox());

    // 2. Reconstruct the data processors.
    transferDataProcessors(from, to);
}

template<typename T, template<typename U> class Descriptor>
void transferBlockLatticeNonLocal (
        MultiBlockLattice2D<T,Descriptor> const& from,
        MultiBlockLattice2D<T,Descriptor>& to, Box2D const& domain )
{
    // 1. Copy all data from the old to the new field. This includes dynamics
    //    objects which must be fully serialized and regenerated.
    copyNonLocal(from, to, domain, modif::dataStructure);
    // 2. Reconstruct the data processors.
    transferDataProcessors(from, to);
}


template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > generateMultiBlockLattice (
        Box2D boundingBox, Dynamics<T,Descriptor>* backgroundDynamics, plint envelopeWidth )
{
    return std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > (
        new MultiBlockLattice2D<T,Descriptor> (
            defaultMultiBlockPolicy2D().getMultiBlockManagement(boundingBox, envelopeWidth),
            defaultMultiBlockPolicy2D().getBlockCommunicator(),
            defaultMultiBlockPolicy2D().getCombinedStatistics(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            backgroundDynamics )
    );
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > defaultGenerateMultiBlockLattice2D (
        MultiBlockManagement2D const& management, plint nDim )
{
    return std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > (
        new MultiBlockLattice2D<T,Descriptor> (
            management,
            defaultMultiBlockPolicy2D().getBlockCommunicator(),
            defaultMultiBlockPolicy2D().getCombinedStatistics(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            new NoDynamics<T,Descriptor> )
    );
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > clone (
        MultiBlockLattice2D<T,Descriptor>& originalLattice,
        Box2D const& subDomain, bool crop )
{
    std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > clonedLattice (
            generateMultiBlockLattice<T,Descriptor>(originalLattice, subDomain, crop) );

    transferBlockLatticeLocal( originalLattice, *clonedLattice,
                               originalLattice.getBoundingBox() );

    return clonedLattice;
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > generateMultiBlockLattice (
        MultiBlock2D const& originalBlock, Box2D const& intersection,
        bool crop )
{
    return std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > (
        new MultiBlockLattice2D<T,Descriptor> (
            intersect(originalBlock.getMultiBlockManagement(), intersection, crop),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            new NoDynamics<T,Descriptor> )
    );
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > generateIntersectMultiBlockLattice (
        MultiBlock2D const& originalBlock1,
        MultiBlock2D const& originalBlock2, bool crop )
{
    return std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > (
        new MultiBlockLattice2D<T,Descriptor> (
            intersect(originalBlock1.getMultiBlockManagement(),
                      originalBlock2.getMultiBlockManagement(), crop),
            originalBlock1.getBlockCommunicator().clone(),
            originalBlock1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            new NoDynamics<T,Descriptor> )
    );
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > generateIntersectMultiBlockLattice (
        MultiBlock2D const& originalBlock1,
        MultiBlock2D const& originalBlock2,
        Box2D const& intersection, bool crop )
{
    MultiBlockManagement2D intersectedBlocks (
            intersect ( originalBlock1.getMultiBlockManagement(),
                        originalBlock2.getMultiBlockManagement(), crop ) );
    MultiBlockManagement2D intersectWithDomain (
            intersect( intersectedBlocks, intersection, crop ) );
    return std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > (
        new MultiBlockLattice2D<T,Descriptor> (
            intersectWithDomain,
            originalBlock1.getBlockCommunicator().clone(),
            originalBlock1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            new NoDynamics<T,Descriptor> )
    );
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > generateJoinMultiBlockLattice (
        MultiBlock2D const& originalBlock1,
        MultiBlock2D const& originalBlock2 )
{
    return std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > (
        new MultiBlockLattice2D<T,Descriptor> (
            block_union (
                originalBlock1.getMultiBlockManagement(),
                originalBlock2.getMultiBlockManagement() ),
            originalBlock1.getBlockCommunicator().clone(),
            originalBlock1.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            new NoDynamics<T,Descriptor> )
    );
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > extend (
        MultiBlockLattice2D<T,Descriptor>& originalBlock, Box2D const& addedBlock )
{
    std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > newBlock (
        new MultiBlockLattice2D<T,Descriptor> (
            extend( originalBlock.getMultiBlockManagement(), addedBlock, addedBlock ),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            originalBlock.getBackgroundDynamics().clone() )
    );

    transferBlockLatticeLocal( originalBlock, *newBlock,
                               originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > except (
        MultiBlockLattice2D<T,Descriptor>& originalBlock,
        Box2D const& exceptedBlock )
{
    std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > newBlock (
        new MultiBlockLattice2D<T,Descriptor> (
            except( originalBlock.getMultiBlockManagement(), exceptedBlock),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            originalBlock.getBackgroundDynamics().clone() )
    );

    transferBlockLatticeLocal( originalBlock, *newBlock,
                               originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > redistribute (
        MultiBlockLattice2D<T,Descriptor> const& originalBlock,
        SparseBlockStructure2D const& newBlockStructure )
{
    std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > newBlock (
        new MultiBlockLattice2D<T,Descriptor> (
            MultiBlockManagement2D (
                newBlockStructure,
                originalBlock.getMultiBlockManagement().getThreadAttribution().clone(),
                originalBlock.getMultiBlockManagement().getEnvelopeWidth() ),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            originalBlock.getBackgroundDynamics().clone() )
    );

    transferBlockLatticeNonLocal( originalBlock, *newBlock,
                                  originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > redistribute (
        MultiBlockLattice2D<T,Descriptor> const& originalBlock,
        SparseBlockStructure2D const& newBlockStructure,
        Box2D const& intersection, bool crop )
{
    return redistribute(originalBlock, intersect(newBlockStructure, intersection, crop));
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T, Descriptor> > align (
        MultiBlockLattice2D<T, Descriptor> const& originalBlock,
        MultiBlock2D const& partnerBlock )
{
    std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > newBlock (
        new MultiBlockLattice2D<T,Descriptor> (
            align(originalBlock.getMultiBlockManagement(),
                  partnerBlock.getMultiBlockManagement()),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            originalBlock.getBackgroundDynamics().clone() )
    );

    transferBlockLatticeNonLocal( originalBlock, *newBlock,
                                  originalBlock.getBoundingBox() );

    return newBlock;
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > reparallelize (
        MultiBlockLattice2D<T,Descriptor> const& originalBlock )
{
    return reparallelize(originalBlock, 64, 64);
}

template<typename T, template<typename U> class Descriptor>
std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > reparallelize (
        MultiBlockLattice2D<T,Descriptor> const& originalBlock,
        plint blockLx, plint blockLy )
{
    std::auto_ptr<MultiBlockLattice2D<T,Descriptor> > newBlock (
        new MultiBlockLattice2D<T,Descriptor> (
            reparallelize (
                originalBlock.getMultiBlockManagement(), blockLx, blockLy ),
            originalBlock.getBlockCommunicator().clone(),
            originalBlock.getCombinedStatistics().clone(),
            defaultMultiBlockPolicy2D().getMultiCellAccess<T,Descriptor>(),
            originalBlock.getBackgroundDynamics().clone() )
    );

    transferBlockLatticeNonLocal( originalBlock, *newBlock,
                                  originalBlock.getBoundingBox() );

    return newBlock;
}

}  // namespace plb

#endif  // MULTI_BLOCK_GENERATOR_2D_HH